Select the option that is related to the third term in the same way as the second term is related to the first term and sixth term is related to fifth term.
4:128. :: 5:? :: 7:686
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 250.
Logic : (First number)3 x 2 = Second Number
⇒4:128
( 4)3 x 2 = 64 x 2 = 128
⇒7:686
( 7 )3 x 2 = 343 x 2 = 686
Similarly,
⇒5:?
( 5)3 x 2 = 125 x 2 = 250
Hence, 250 is the correct answer.